If a bus route travels back and forth between two places (sometimes taking a different route slightly in one direction, if it enters a one-way area, for example), should there just be one relation for the entire route from A to B to A? And, additionally, should the same relation be added to a way twice, for each direction, on the ways in which the route is travelled on in both directions (or for every individual time the route goes through a particular way)?way)? Also, here's an example of where a bus route might go: [Example route][1] In this case, the bus travels south on the A23, turns left on to Three Arch Road, and travels to East Surrey Hospital (Canada Avenue), where it makes a small loop, where it travels back along Three Arch Road, and then continues further south in the direction of Gatwick Airport. If the bus is to then return back and again, enter the hospital, i.e. if it stops at the hospital from either direction, it will mean Three Arch Road is used by the route 4 times, therefore, should there be 4 entries of the same relation? [1]: https://www.google.com/maps/preview#!data=!4m30!3m29!1m4!3m2!3d51.218923!4d-0.171564!6e2!1m4!3m2!3d51.2166314!4d-0.1708344!6e2!2e0!3m8!1m3!1d3016!2d-0.1685492!3d51.2185836!3m2!1i944!2i927!4f13.1!6m2!1m1!1e4!9m5!2m2!3d51.2188785!4d-0.1646564!3s0x4875fadfb3cda86b%3A0x386d1543a2c1e773!4f0.6890935&fid=0

If a bus route travels back and forth between two places (sometimes taking a different route slightly in one direction, if it enters a one-way area, for example), should there just be one relation for the entire route from A to B to A? And, additionally, should the same relation be added to a way twice, for each direction, on the ways in which the route is travelled on in both directions (or for every individual time the route goes through a particular way)?